Thermo Scientific TRACE 1600 Hardware Manual page 531

Installing and Purging the Gas Regulator
Installing and Purging the Helium Purifier
Thermo Scientific
• The pressure regulators are commercial ultra-pure grade regulators with stainless steel
diaphragms. Regulators with diaphragms made of neoprene or others elastomers should
never be used.
• The connecting tubes are thoroughly cleaned and baked before use.
• The gas regulator and the helium purifier must be properly purged. See the following
sections for further details:
"Installing and Purging the Helium Purifier"
Discharge Gas Supply"
WARNING Never use leak detecting fluids on any part of the system.
WARNING To avoid injury, before starting make sure to strictly respect all the
Regulations concerning the manual handling of gas cylinders under pressure.
 To install and purge the gas regulator
1. Install the pressure regulator on the cylinder.
2. Making sure the regulator is closed, open the cylinder allowing the regulator to pressurize.
3. Close the cylinder and check the regulator for pressure leaks. Observe the needle of the
regulator output pressure gauge for 15 minutes.
4. Open the regulator allowing the pressure to relief.
5. Repeat five times from step 2.
 To install and purge the helium purifier
Before starting, make sure the helium purifier outlet tube is capped.
1. Connect the helium cylinder pressure regulator to the inlet port of the helium purifier by
using the appropriate connecting tube and fittings.
2. Turn the output pressure regulating knob clockwise until the gauge registers 345 kPa
(50 psig).
3. Wait five minutes for equilibrium, then turn the regulating knob all the way
counterclockwise.
"Installing and Purging the Gas Regulator"
on
on page 500.
9
Adding a PDD Module
on
page 499, and "Connecting the
TRACE 1600/1610 Hardware Manual
Adding Modules
page 499,
499